Freelancer profile translated to English.
Back to original languageAbout Tanvir
Hello đź‘‹,
I am Tanvir, a Full-Stack developer specializing in the JavaScript ecosystem (TypeScript, React, Node.js).
Beyond writing code, my job is to design robust and high-performing web applications that meet your business needs.
With dual experience as a startup developer and co-founder, I have a global vision of projects: I know that a feature is only useful if it is delivered on time and serves the end-user.
đź› How I work with my clients:
🚀 My areas of expertise:
đź› My Tech Stack:
🎯 **Sectors of affinity**: B2B SaaS, Blockchain/Web3, Education (but I adapt quickly to any business domain).
đź’¬ Do you have a SaaS project, a business application, or a web product to develop?
Let's discuss your needs and see how I can concretely help you!
Tanvir
French
Native or bilingual
English
Fluent
Bangla
Native or bilingual
Remote only
Primarily works remotely
Experience
- CryptioBackend DeveloperSOFTWARE PUBLISHINGAugust 2025 - Today (1 year)Paris, FranceAs a backend developer at Cryptio, I led theDevelopment of Multi-Chain Blockchain Connectors:
- Design and development of custom connectors for various blockchains (Bitcoin, Cardano, Injective, Kaia, Kava, Gnosis, Ink....)
- Management of specific technical aspects of each protocol (UTXO vs account model, dual architectures (Cosmos/EVM))
- Integration of blockchain APIs and decentralized services (gRPC, REST APIs)
On-Chain Data Processing and Reconciliation:- Retrieval and processing of transactional data via APIs and blockchain explorers
- Resolution of complex reconciliation issues: inconsistent timestamps, missing transactions (staking, DeFi), indexing delays
- Balance calculations, staking reward tracking, and DeFi operations management
Results Obtained:- Over 30 blockchain connectors developed and deployed in production in 4 months
- Direct contribution to the platform's B2B customer requests (custom integrations, resolution of technical issues)
- NamesteFullstack DeveloperRESTAURANTS AND FOOD SERVICEJune 2024 - December 2024 (6 months)Saint-Germain-en-Laye, FranceFamily Indian restaurant established in 1994 in Saint-Germain-en-Laye. As part of their digitalization, I designed and developed their e-commerce website and online reservation system.My mission:Complete website redesign to modernize the restaurant's online presence and facilitate customer reservations.Concrete results:
- Modern and high-performance website deployed in production (**nameste.fr**)
- Integrated online reservation system, simplifying table management
- Comprehensive administrator dashboard for autonomous content management
- Optimized user experience with fluid animations and responsive design
Technical achievements:Front-End Development:- Modern interface with Next.js and advanced animations (page transitions, visual effects)
- Responsive and mobile-optimized design
- Integration of videos and image gallery (Supabase CDN)
- Online reservation system with date/time/number of people selection
Back-Office & Administration:- Comprehensive administrator dashboard with secure authentication (Clerk)
- Real-time content management (menu, dishes, prices, availability)
- Reservation metrics and statistics with dynamic filters
- Intuitive interface allowing the restaurant to manage content without a developer
Infrastructure:- Hosting and deployment in production (Vercel)
- Optimized image storage (Cloudflare)
- Optimized performance and SEO
- Payment management (Stripe)
- Ecole alternance informatique Paris - ETNAASSETSEDUCATION AND E-LEARNINGMarch 2024 - April 2024 (1 month)Ivry-sur-Seine, FranceI supported students during their intensive bootcamp: organizing courses for beginners (algorithms, programming), personalized follow-up for struggling students, and pedagogical adaptation to make technical concepts accessible to all.
My mission:
Teaching & Training:- Organization and facilitation of courses for beginners (algorithmic thinking, programming logic)
- Creation of educational content adapted to different levels
- Explanation of fundamental concepts with concrete and simplified examples
- Enhanced support for students facing difficulties with individualized follow-up
Technical Support:- Personalized student follow-up on their projects and exercises
- Assistance with debugging and problem-solving
- Guidance towards the right resources and research methods
- Transmission of best practices in development and clean code
Technologies Taught:- Languages: Python, TypeScript, Bash/Shell, Django
- Web: HTML, CSS, web development
- Concepts: algorithmic thinking, data structures, programming logic
Developing Autonomy:- Training in self-learning and solution-finding
- Promotion of peer support and collaborative work among students
- Adaptation of pedagogy according to profiles (beginners vs. advanced)
Concrete Results:
- Significant improvement in the success rate of students supported in exercises and bootcamp projects
- Organization and facilitation of courses for beginners (algorithmic thinking, programming fundamentals)
- Unblocking students in difficulty: personalized support enabling complete beginners to catch up and validate their exercises
- Notable progress in understanding key concepts (algorithms, programming logic, data structures)
- Continuous technical support throughout the intensive period (9 am-11 pm)
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Education
- Software EngineeringEpitech